Date: Thu, 21 Dec 2017 05:55:02 +1100 From: Peter Jeremy <peter@rulingia.com> To: Andriy Gapon <avg@FreeBSD.org> Cc: Baptiste Daroussin <bapt@freebsd.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: Re: svn commit: r326619 - stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs Message-ID: <20171220185502.GA5042@server.rulingia.com> In-Reply-To: <a5f9f5df-11e9-cf1e-e599-3a93e2866c50@FreeBSD.org> References: <201712061001.vB6A12Ot032201@repo.freebsd.org> <20171213185214.GA12026@server.rulingia.com> <a5f9f5df-11e9-cf1e-e599-3a93e2866c50@FreeBSD.org>
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--ikeVEW9yuYc//A+q Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2017-Dec-19 14:50:57 +0200, Andriy Gapon <avg@FreeBSD.org> wrote: >On 13/12/2017 20:52, Peter Jeremy wrote: >> This change appears to break the backpressure mechanism that forces >> ARC to release wired memory. Running FreeBSD/amd64 r326743, I found =2E.. >could you please try to monitor 'arc-needfree' DTrace probe during periods= when >you are trying to put a pressure on the memory? >The probe's argument (signed) tells the ARC's idea of the memory availabil= ity / >shortage. I will see if I can reproduce the issue in a VBox to remove the need to revert my reversion. Give me a couple of days. --=20 Peter Jeremy --ikeVEW9yuYc//A+q Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQJ8BAEBCgBmBQJaOrIGXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRFRUIyOTg2QzMwNjcxRTc0RTY1QzIyN0Ux NkE1OTdBMEU0QTIwQjM0AAoJEBall6Dkogs05a0P/j1nZBNy8hkIlIxNi1DMhQYQ Y4sxX1dMHEi7gdjsO9Ex8qMic9dmeYISmlR7Rqu5G5nzntUWS12CID0AVq5OpvL9 u6SZT1h/HLt/T8E17801t/CReuJ5IbdyGkI9BrTJDNxdl2pQ4mmw0tmpiQ7CsStN YNfTPsNgGkqd8YaHJE4u6fXmWEtomFz7GNM1nYO7MtIp4Dml/f84esIewoJ53qjx l8deMUOU3Ilz9t/I1pxP7q5dwBalbU3bkhVeyo/9bSBrWCEtUrZQjSLrAnSnqtXj A8hozEUx7NhB1bRBIuhR/69B9WngIrth76oU05mOXw4uUMZv1CdU6Gw+k/DdJPht 994zOmZEJCz3JIw6BUaq6v+ceE7vBuq8upTlAMkaXByAqw4l/roxjXUDXRndXRjJ wHW4cXlkl6+cUcVHfQNm7hCqGmgLZVBSen67W0oKTzbKYTul5vICJErg5/4gKHmW feiNeGfZXdwxNmZG/UifM8HerX0M7/gTmUQejYPXGVKCATir0HcT6qEtrYukrxsU /7snCdAFTXr6lR1QMgG+BQfkYnRvyCeLFUBmpEr3yrL1FlgEl3YiIIfchDnEFUzc yfDRKIPlN/LRO9oHXksjtYd3hJJ2VqYV+szBj+wNa03/zYinbhP3lC9jnO6TZk+Z srFZuhjirS0rRnM7u0FM =a9aN -----END PGP SIGNATURE----- --ikeVEW9yuYc//A+q--
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